Electronics Agents
Dip 30V 2.5A PPTC Resettable Fuse , Polyswitch PTC Devices For Over Current Protective
LT30250
Description
Dip 30V 2.5A PPTC Resettable Fuse , Polyswitch PTC Devices For Over Current Protective
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Quick Detail:
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? Fast trip times and resettable protection
? Overcurrent and over temperature protection
? Wide range of current (Ihold) and voltage (Vmax) offerings
? Low resistance
? RoHS compliant, lead-free, halogen-free
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Description:
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The Cooper Bussmann family of PolyTron? resettable PPTCs is ideally suitedfor protecting applications sensitive to high ambient operating temperatures orsubject to frequent overcurrent conditions.PPTCs operate as a positive temperature coefficient device. High temperatures and excessive current will cause the device resistance to increase until it limits the unsafe current level.Upon reaching the design temperature/current limit, the PPTC will effectively“open” the circuit to provide protection from the overcurrent or elevated ambient temperature condition.Once the fault is removed or the ambient temperature cools, the PPTC will automatically “reset” and conduct safe current levels again, allowing current to flow through the circuit.PPTCs are commonly used in applications where constant uptime is required and/or in circuits not easily accessible by a user or service technician.Available in surface mount and radial packages, Cooper Bussmann resettable PPTCs help improve the safety and reliability of customer equipment worldwide.
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Applications:
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? Medical Equipment
? Industrial Power and Transmission
? White Goods
? Telecommunications and Networking
? Computer and Peripherals
? Consumer and Automotive Electronics
? Battery and Rechargeable Devices
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Specifications:
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Product Dimensions in Millimeter?
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Part Number | A | B | C | D | E | F | Lead |
Max | Max | Typ. | Min | Max | Typ. | Style | Size(Φ) |
LT30-090 | 6.0 | 13.8 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-110 | 7.8 | 14.0 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-135 | 8.9 | 14.0 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-160 | 9.7 | 17.0 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-185 | 10.7 | 17.0 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-250 | 11.7 | 19.0 | 5.1 | 7.6 | 3.0 | 0.9 | 1 | 0.6 |
LT 30-300 | 11.7 | 21.0 | 5.1 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-400 | 14.2 | 23.0 | 5.1 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-500 | 14.4 | 28.0 | 10.2 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-600 | 16.7 | 28.0 | 10.2 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-700 | 19.4 | 29.6 | 10.2 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-800 | 21.6 | 31.9 | 10.2 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
LT 30-900 | 24.5 | 36.4 | 10.2 | 7.6 | 3.0 | 1.2 | 2 | 0.8 |
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Electrical Characteristics at 25 ℃?
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Part Number | IH | IT | Vmax | Imax | Ttrip | Pdtyp | Rmin | Rmax |
(A) | (A) | (V) | (A) | Current(A) | Time(s) | (W) | (Ω) | (Ω) |
LT 30-090 | 0.90 | 1.80 | 30 | 40 | 4.50 | 7.1 | 0.91 | 0.07 | 0.12 |
LT 30-110 | 1.10 | 2.20 | 30 | 40 | 5.50 | 6.6 | 1.00 | 0.05 | 0.10 |
LT 30-135 | 1.35 | 2.70 | 30 | 40 | 6.75 | 7.3 | 1.11 | 0.04 | 0.08 |
LT 30-160 | 1.60 | 3.20 | 30 | 40 | 8.00 | 8.0 | 1.20 | 0.03 | 0.07 |
LT 30-185 | 1.85 | 3.70 | 30 | 40 | 9.25 | 8.7 | 1.27 | 0.03 | 0.06 |
LT 30-250 | 2.50 | 5.00 | 30 | 40 | 12.50 | 10.3 | 1.34 | 0.02 | 0.04 |
LT 30-300 | 3.00 | 6.00 | 30 | 40 | 15.00 | 10.8 | 2.00 | 0.02 | 0.05 |
LT 30-400 | 4.00 | 8.00 | 30 | 40 | 20.00 | 12.7 | 2.50 | 0.01 | 0.03 |
LT 30-500 | 5.00 | 10.00 | 30 | 40 | 25.00 | 14.5 | 3.00 | 0.01 | 0.03 |
LT 30-600 | 6.00 | 12.00 | 30 | 40 | 30.00 | 16.0 | 3.50 | 0.005 | 0.02 |
LT 30-700 | 7.00 | 14.00 | 30 | 40 | 35.00 | 17.5 | 3.80 | 0.005 | 0.02 |
LT 30-800 | 8.00 | 16.00 | 30 | 40 | 40.00 | 18.8 | 4.00 | 0.005 | 0.02 |
LT 30-900 | 9.00 | 18.00 | 30 | 40 | 40.00 | 20.0* | 4.20 | 0.005 | 0.01 |
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IH=Hold current: maximum current at which the device will not trip at 25℃ still air.
IT=Trip current: minimum current at which the device will always trip at 25℃ still air.
Vmax=Maximum voltage device can withstand without damage at rated current.
Imax=Maximum fault current device can withstand without damage at rated voltage.
Ttrip=Maximum time to trip(s) at assigned current.
Pdtyp=Typical power dissipation: typical amount of power dissipated by the device when in state air environment.
Rmin=Minimum device resistance at 25℃ prior to tripping.
Rmax=Maximum device resistance at 25℃ prior to tripping.
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Thermal Derating [ Hold Current (A) at Ambient Temperature (℃)] ??????????????????????????????????????????????????????????????
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Part Number | Maximum Ambient Operating Temperature (℃) |
-40 | -20 | 0 | 25 | 40 | 50 | 60 | 70 | 85 |
LT 30-090 | 1.40 | 1.25 | 1.10 | 0.90 | 0.75 | 0.69 | 0.65 | 0.60 | 0.50 |
LT 30-110 | 1.75 | 1.52 | 1.33 | 1.10 | 0.99 | 0.90 | 0.80 | 0.73 | 0.63 |
LT 30-135 | 2.15 | 1.94 | 1.70 | 1.35 | 1.20 | 1.14 | 1.00 | 0.90 | 0.81 |
LT 30-160 | 2.49 | 2.21 | 1.94 | 1.60 | 1.42 | 1.31 | 1.19 | 1.03 | 0.88 |
LT 30-185 | 2.87 | 2.59 | 2.28 | 1.85 | 1.63 | 1.52 | 1.33 | 1.21 | 1.05 |
LT 30-250 | 3.82 | 3.44 | 3.03 | 2.50 | 2.17 | 2.00 | 1.81 | 1.59 | 1.39 |
LT 30-300 | 4.55 | 4.10 | 3.60 | 3.00 | 2.65 | 2.51 | 2.24 | 2.01 | 1.74 |
LT 30-400 | 6.00 | 5.40 | 4.74 | 4.00 | 3.47 | 3.28 | 2.82 | 2.63 | 2.26 |
LT 30-500 | 7.44 | 6.68 | 5.80 | 5.00 | 4.30 | 4.03 | 3.58 | 3.22 | 2.77 |
LT 30-600 | 8.90 | 7.99 | 7.08 | 6.00 | 5.13 | 4.82 | 4.27 | 3.84 | 3.30 |
LT 30-700 | 10.35 | 9.30 | 8.21 | 7.00 | 5.95 | 5.58 | 4.96 | 4.46 | 3.84 |
LT 30-800 | 11.60 | 10.60 | 9.35 | 8.00 | 6.79 | 6.36 | 5.64 | 5.07 | 4.36 |
LT 30-900 | 13.25 | 11.90 | 10.49 | 9.00 | 7.53 | 7.12 | 6.32 | 5.69 | 4.88 |
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Reliability Test ????????????????????????? ?????????????????????????????????????????????
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Test | Test Conditions | Accept/Reject Criteria |
Resistance | In still air @ 25℃ | Rmin≤R≤Rmax |
Time to Trip | Specified current, Vmax, 25℃ | T≤maximum Time to Trip |
Hold Current | 30min, at IH | No trip |
Trip Cycle Life | Vmax, Imax, 100cycles | No arcing or burning |
Trip Endurance | Vmax, 24hours | No arcing or burning |
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Typical Time-to-Trip Curves at 25 ℃???????????????????????????????????????????????????????? ?
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A = LT 30-090
B = LT 30-110
C = LT 30-135
D = LT 30-160
E = LT 30-185
F = LT 30-250
G = LT 30-300
H = LT 30-400
I =? LT 30-500
J = LT 30-600
K = LT 30-700
L = LT 30-800
M = LT30-900
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Package Information????????????????????????????? ?????????????????????????????????????
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Bulk:
LT 30-090 ~ LT 30-185…………………………….1000 pcs per bag
LT 30-250 ~ LT 30-800……………………………. .500 pcs per bag
LT 30-400……………………………………………1000 pcs per bag
LT 30-900…………………………………………….200 pcs per bag
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Tape & Reel:
LT 30-090 ~ LT 30-250…………………………….3000 pcs per reel
LT 30-300……………………………………………2500 pcs per reel
LT 30-400 ~ LT 30-500…………………………….1500 pcs per reel
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Competitive Advantage:
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# # Factory supply directly
# Completed certificates such as UL,VDE,SGS,etc and high quality available
# ?Quick delivery
# Best after-sales services
# OEM & ODM available
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Read More
uchidg@126.com
Metal Oxide Varistor
Address: Samsung Industrial Park,Yucai Road, Jinju Village, Dalingshan Town, Dongguan 523820,Guangdong ,China,
Dongguan, Guangdong
China, 523000
Tel: 86-769-86183707-602
Fax: 86-769-85625751
